/* * Copyright 2012 The LibYuv Project Authors. All rights reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include "libyuv/basic_types.h" #include "libyuv/compare.h" #include "libyuv/version.h" int main(int argc, char** argv) { if (argc < 1) { printf("libyuv compare v%d\n", LIBYUV_VERSION); printf("compare file1.yuv file2.yuv\n"); return -1; } char* name1 = argv[1]; char* name2 = (argc > 2) ? argv[2] : NULL; FILE* fin1 = fopen(name1, "rb"); FILE* fin2 = name2 ? fopen(name2, "rb") : NULL; const int kBlockSize = 32768; uint8 buf1[kBlockSize]; uint8 buf2[kBlockSize]; uint32 hash1 = 5381; uint32 hash2 = 5381; uint64 sum_square_err = 0; uint64 size_min = 0; int amt1 = 0; int amt2 = 0; do { amt1 = static_cast<int>(fread(buf1, 1, kBlockSize, fin1)); if (amt1 > 0) hash1 = libyuv::HashDjb2(buf1, amt1, hash1); if (fin2) { amt2 = static_cast<int>(fread(buf2, 1, kBlockSize, fin2)); if (amt2 > 0) hash2 = libyuv::HashDjb2(buf2, amt2, hash2); int amt_min = (amt1 < amt2) ? amt1 : amt2; size_min += amt_min; sum_square_err += libyuv::ComputeSumSquareError(buf1, buf2, amt_min); } } while (amt1 > 0 || amt2 > 0); printf("hash1 %x", hash1); if (fin2) { printf(", hash2 %x", hash2); double mse = static_cast<double>(sum_square_err) / static_cast<double>(size_min); printf(", mse %.2f", mse); double psnr = libyuv::SumSquareErrorToPsnr(sum_square_err, size_min); printf(", psnr %.2f\n", psnr); fclose(fin2); } fclose(fin1); }